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I only turn the light on when I'm shooting up close. It's not strong enough for anything at any distance, and wastes battery power.

I didn't know the guy, but another friend of mine does, and his wife had a baby just a few weeks ago. I live across the bay from where this happened. I've never been diving at Beavertail, but have dove just a little ways up the coast from there. I got some more info from local news reports...

Fins work pretty well... ;-)

I've only done 1 or 2 negative descents in my short (~60 dives) diving career, and equalizing is the limiting factor in how fast I can get down. I'm pretty much holding my nose and puffing out the whole time.

And equalize, equalize, equalize!

Sometimes you don't know they've touched it, so I always try to remember to do another breathing test just before splashing. That still didn't stop me from once splashing without my reg in my mouth, though. On a negative entry, no less...

I can do helicopter turns just fine as long as I don't think too much about it, but can't back up very well yet. I generally just take an extra deep breath, and let the buoyancy take me up a bit before I helicopter around to wherever I want to go.

If you're staying at a more up-scale hotel, often the concierge knows (or can find) dive ops. That's what I did in Hawaii, and had a great trip.

If your ears can stand it, go for it. I had to skip one dive in the middle of the week last year to let my ears rest when I had 17 dives in 5 days (would have been 18 if I hadn't skipped the one).

Most of them have swim bladders, though, which amount to the same thing for buoyancy purposes.

Unresponsive on the wreck? Likely medical issue, then. Not absolutely certain, though...

So you're a naked mole rat? That's cool; I didn't know they had internet access! People, on the other hand...

Possibly, but it is certain that lack of oxygen will shorten your life by a much larger amount! ;-)

I'm with most of the same people when I go, and some of them will hand up their weight belt before climbing the ladder. That seems like just asking to lose it, but if their knees need the help, that's up to them I guess. I haven't seen anybody take off their BC and tank before going up the...

The op I dive with in Cozumel has you grab the ladder, then hand your fins up to the boat crew, and then climb the ladder. They don't specify to keep the reg in my mouth, but I always do (and keep my mask on too) while climbing the ladder, though it's often out when I'm just floating on the...

40 meters under ground, not below the water level, is how I read that. Probably a cave above the water table, but under a hill/mountain.

Yup. Like others have said, buy a reg first if you can generally get a rental BC that fits.

If I'm stuck at any reasonable depth, I'd be working on it, but as I got low, and well before it got hard to breathe, I'd be looking at getting out of the BC and doing a free ascent.

Getting good with a compass, is probably it, TBH (I still have a ways to go on that). And remembering everything when I'm loading up the car. ;-) Getting buoyancy (total weight) was a matter of two or three dives with some experimentation. Getting my weight distribution dialed in to get my...

As with most medical decisions, it's a judgement call on the part of the personnel involved. If the injuries are serious enough and can't be managed on site, the speed of an airlift may override the additional risk of an DCS/AGE. Or, they may have known that it's not an injury that would be...